I was rather younger and fitter in my Oxford days but it is a perfectly easy walk from LMH to the Bird and Baby - I used to have the occasional lecture at Norham Gardens. Obviously not as close as Somervile but ...
I haven't booked yet - I haven't decided if I am staying up yet and if so whether for 1 or 2 nights. But don't let that stop you... it took me hours to pluck up the courage to introduce myself to Dave and Lal so it would take well beyond Friday night to meet people I know less...
I always prefered the Lamb and Flag but I believe it has been tarted up now

it used to be very Inspector Morse...